Or Click Start > Run and type diskmgmt.msc in the Open: line and click OK.

The Disk Management snap-in will open.

Under the Storage section, choose Disk ManagementYou should see your USB drive listed here. It may not have a drive letter assigned.

Right click your USB drive and select Format

Make sure the settings you want are selected, then click OK

Close all windows, and select the 'safely remove hardware' icon in the system tray . Select your drive ,remove the drive for 30 seconds, then insert the drive again.

Method 3

USB Disk Storage Format Tool lets you format any USB stick with the desired file system.USB Disk Storage Format Tool views the USB stick like a normal disk drive and then formats the USB stick with the desired file system (FAT, FAT32, NTFS). With NTFS you can also squeeze out more storage, if you turn on the available data compression.

Fixes installation issue where installation process stopped after the earlier version of software was uninstalled and the new software was not automatically installed. The installation process now restarts automatically to install the new software after uninstalling the older version.

All drives connected through the USB port of the computer is recognized and can be formatted using this software.This Tool works with a wide variety of USB devices including many not manufactured by HP making it more or less an universal software tool to format an USB device.With this tool you can also create a bootable USB Disk

thanks bossI was trying to take an ISO image of a bootable CD and make a bootable USB flash drive from it...but there was a power failure during format... and this tool HP USB Disk Storage Format Tool v2.1.8 helped to get my usb back

A RAW filesystem simply means that it is a filesystem that is not recognized by Windows. Therefore all the available filesystem drivers are unable to mount the filesystem as a drive. This often happens when the records determining the filesystem type or location on the disk are damaged or corrupted, usually the partition table or the boot sector.Since Windows sees no filesystem in the partition, it prompts you to format it in order to create a filesystem on it. DO NOT FORMAT IT.

The most common cause of external hard drives suddenly becoming RAW drives is if they are disconnected from a computer without using the “Safely Remove Hardware” option. This can happen in many ways such as a power failure, unplugging the drive from the USB port or from its AC adapter, a problem with the computer that causes it to temporarily disconnect the USB hubs and many more circumstances can lead to this occurring

iCare Data Recovery software can help you recover files from raw file system .